The ISL62881C provides a complete solution for

microprocessor and graphic processor core power supply

with it’s integrated gate drive. Based on Intersil’s Robust

Ripple regulator (R3™) technology, the PWM modulator

compared to traditional modulators, has faster transient

settling time, variable switching frequency during load

transients and has improved light load efficiency with its

ability to automatically change switching frequency.

Fully compliant with IMVP6.5™, the ISL62881C is easily

configurable as a CPU or graphics VCORE controllers by

offering: responds to DPRSLPVR signals by

entering/exiting diode emulations mode; reports

regulator output current via the IMON pin; senses

current by using a discrete resistor or the inductor;

over-temperature thermal compensation of DCR, using a

single NTC thermistor; differential sensing to accurately

monitor and adjust processor die voltage; minimizes

body diode conduction loss in diode emulation mode with

it’s adaptive body diode conduction time.

Need to aggressively reduce the output capacitor? The

overshoot reduction function is user-selectable and can

be disabled for those concerned about increased system

thermal stress.

Maintaining all the ISL62881C functions, the ISL62881D

offers VR_TT# function for thermal throttling control. It

also offers the split LGATE function to further improve

light load efficiency.

Features

• Precision Core Voltage Regulation

- 0.5 System Accuracy Over-Temperature

- Enhanced Load Line Accuracy

• Supports Multiple Current Sensing Methods

- Lossless Inductor DCR Current Sensing

- Precision Resistor Current Sensing

• Current Monitor

• Differential Remote Voltage Sensing

• Integrated Gate Driver

• Split LGATE Driver to Increase Light-Load Efficiency

(For ISL62881D)

• Adaptive Body Diode Conduction Time Reduction

• User-selectable Overshoot Reduction Function

• Small Footprint 28 Ld 4x4 or 32 Ld 5x5 TQFN

Package

Applications

• Notebook Core Voltage Regulator

• Notebook GPU Voltage Regulator